Using MINSCALE defined in ArcMap

StephenLead

When I look in my REST Services catalog, I can see that a MINSCALE has been defined for a layer:

Min. Scale: 250000

How can I use this value in Silverlight, without having to hard-code it? That is, I want this layer in Silverlight to use whatever value for MINSCALE was set using ArcMap.

Thanks,
Steve

JenniferNery

I don't want the features to draw when I zoom out beyond the Min Scale.

This might be something we will support out-of-the-box in the future versions of our API.

But for the meantime, you can get the minimum scale information from your layer this way.

        public MainPage()
        {
            InitializeComponent();
            FeatureLayer layer = this.MyMap.Layers["LayerID"] as FeatureLayer;
            if (layer == null) return;
            WebClient webClient = new WebClient();
            webClient.DownloadStringCompleted += new DownloadStringCompletedEventHandler(webClient_DownloadStringCompleted);
            webClient.DownloadStringAsync(new Uri(layer.Url + "?f=json", UriKind.RelativeOrAbsolute));
        }

        void webClient_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            string[] properties = e.Result.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
            string minScale = properties.FirstOrDefault(p => p.Contains("minScale"));
            if(minScale != null)
                minScale = minScale.Substring(minScale.IndexOf(':') + 1, minScale.Length - (minScale.IndexOf(':') +1));            
//TODO: use this minScale value.
        }